For someone interest, the python version of the Frihost hosting is Python 2.6.6, so some things that works in modules imported from 2.7 won't work here. One of the most common things missing in 2.6 is compression dictionaries, which are like this:

Code:

foo={i:j for i,j in zip(range(10),range(10))}

Note: this may not work
To convert it to 2.6-compatible you have to change it to something like this: